212 PUCCINIA 
82. Puccinia Ribis DC. 
Puceinia Ribis DC. Flor. fr, ii. 221. Gard. Chron. 1894, xvi. 135. 
Trans. Brit. Myc. Soc. i. 57. Sace, Syll vii. 679. Sydow, 
Monogr. i. 496. 
Teleutospores. Sori epiphyllous, orbicular, surrounded by a 
discoloured yellow zone, circinate 
(-S and often confluent, pulverulent, 
rich chestnut-brown ; spores oval 
Gs oe or oblong, rounded above and be- 
low, apex thickened slightly and 
hooded, hardly constricted, verru- 
culose or rather punctate, chest- 
nut-brown, 20—30 x 15—20 yp; 
Bigs 108. ries or eis pedicels hyaline, thin, deciduous, 
about as long as the spore; a few 
mesospores intermixed. 
On leaves of Ribes rubrum. Very rare. Dallas Manse 
Garden, Elginshire, July 16, 1894 (Rev. Dr Keith). (Fig. 159.) 
The pore of the lower cell is always towards the base, near the insertion 
of the pedicel. Eriksson showed that the teleutospores do not germinate 
until they have passed through the winter. He considers the form on 
Ribes rubrum as biologically distinct from that on 2. nigrum or R. 
Grossularia. 
DisrripuTion: Central and Northern Europe, North 
America. 
83. Puccinia Saxifrage Schlecht. 
Puccinia Saaifragae Schlecht. Flor. Berol. ii. 134. Plowr. Ured. 
p. 208. Sace. Syll. vii. 678. Sydow, Monogr. i. 500. Fischer, 
Ured. Schweiz, p. 151, f. 117. 
P. Saxifragarum Cooke, Micr. Fung. p. 209 (non Handb. p. 506). 
Teleutospores. Sori generally hypophyllous, on discoloured 
spots, round, scattered or aggregated and confluent and then 
irregular, soon naked, pulverulent, dark-brown ; spores ellipsoid 
or oblong, rounded at both ends or slightly attenuated below, 
slightly constricted, often surmounted by a rather large pale 
